Kolab 2.2RC1 Mail Forwarding Problem

[Alex Chejlyk]

Hello,

I set mail forwarding to my gmail account via the Kolab Admin interface.
Internal users who send me an email receive an "Undeliverable Mail" 
message which references the 'forwarded to' account.

My Setup: Kolab2.2RC1, debian binaries.

server fqdn: mail.kolabserver.org
email account: jdoe at kolabserver.org
forward set to: jdoe at gmail.com
sender is: janedoe at kolabserver.org

Below is the message:

                    The mail system

<jdoe at gmail.com>: permission denied. Command output: Invalid From:
     header. Jane Doe <janedoe at kolabserver.org> looks like a forged
     sender


Reporting-MTA: dns; mail.kolabserver.org
X-Postfix-Queue-ID: 95921503BFEF
X-Postfix-Sender: rfc822; janedoe at kolabserver.org
Arrival-Date: Tue,  4 Mar 2008 11:36:56 -0500 (EST)

Final-Recipient: rfc822; jdoe at gmail.com
Action: failed
Status: 5.7.0
Diagnostic-Code: x-unix; Invalid From: header. Jane Doe
     <janedoe at kolabserver.org> looks like a forged sender

Is it because the From header shows the sender's email address 
janedoe at kolabserver.org and not the forwarding email address 
jdoe at kolabserver.org?


Thanks,

Alex C.